Improvement in swivel-plows



LUFKIN. Swivel-Plow.

No. 209,697,. Patnfed Nov. 5,'187 8.

0226683. I Ifiventbn Wk 6 W UNITED STATES PATENT OFFICE.

CHARLES M. LUFKIN, OF ALSTEAD, NEW HAMPSHIRE.

IMPROVEMENT IN SWlVEL-PLOWS.

Specification forming part of Letters Patent No. 209,697, dated November5, 1878; application filed October 28, 1878.

To all whom it may concern:

Be it known that I, CHARLES M. LUFKIN, of Alstead, in the county ofCheshire and State of New Hampshire, have invented a new and usefulImprovement in Swivel-Flows, which improvement is fully set forth in thefollowing specification, reference being had to the accompanyingdrawings.

The object of my invention is to obtain a more perfect cutting device toform the furrow-slice than that in common use, and is accomplished by aself-adjusting colter and a land-wing, which is attached to both sidesof the rear end of the bottom of the standard, for the purpose ofcutting under the land, so that the furrow-slice may be completely outoff, thereby greatly facilitating the operation of turning thefurrow-slice and materially lessening the draft.

The colter t is attached firmly to the beam A in anyconvenient manner,and the beam is attached to the standard 0 by a joint or hinge, which isso constructed as to admit of snfficient-movement to adjust the colter cinto proper position with the point I), and is firmly held by the hook cin the usual manner, as shown in the side View, Figure 1, in the rearview, Fig. 2, and in section, Fig. 3.

The mold-board B is pivoted to the front end of the land-side orstandard 0, and the inner side of the mold-board has a V-shaped brace,m, which is pivoted to the back end of the land-side.

By this arrangement the mold-board B may be turned around underneath thestandard,

so as to be adjusted to either side of the beam, as may be required.

To the under side of the beam A are attached two sockets, d and f, whichare fitted to the top of the standard and attached by means of ahook-shaped bolt, h, and eyebolt j, forming a jointed or hingedconnection of the beam to the standard, by which the beam is held inposition and allowed to rock from right to left by reversing the plowfor the purpose of adjusting the colter i to the point I), and it isretained in position by the hook c, which firmly holds the guide-socketf on its bearing 1, thereby holding the several parts in properposition. To the rear end of the standard or land-side, at the bottom,are attached two win gs or angular cutters, n n, projecting laterally onboth sides, and so constructed that they may be detached when worn outand replaced with new ones.

When the plow is drawn along the colter 6 cuts down through the turfnearly perpendicularly, gaging the width of the furrow-slice, and-thewing n, which is on the land-side of the plow, cuts under the land, sothat in cutting the ncxt furrow the share will meet its track, cuttingthe furrow-slice completely off, enabling the plow to cut a much widerand deeper furrow than it would otherwise do.

I do not claim a self-shifting colter, as that is an old and well-knowndevice; but

I'do claim asymy invention and desire to secure by Letters Patent Therocking beam A, carrying the colter i, in combination with the standard0, hinged to said beam, as described, the colter being shifted into linewith the point b by means of the rocking beam, all constructed andarranged to operate substantially as set forth.

CHARLES M. LUFKIN.

Witnesses:

MAT'rm E. LUFKIN, EMMA P. BURGE.

